Dishwashing machine



June 1 1937. C. A. HULL 2,082,004

DISHWASHING MACHINE charms A. man

June l, 1937. c; A. HULL 2,082,004

DIsHwAsHI'NG MACHINE Filed Nov. 29, 193s' s sheets-sheet 2 June l, 1937.

C. A. HULL DISHWAlSHI-NG MACHINE Filed NOV. 29 1935 J I I 3 Sheets-Sheejl 3 All/1 Snnenfor char/es 11. Hun.

(Ittorneg f5 Serial :zo and I Patented l, .11937 "UNT-Tao4 STATES PATENT OFFICE ..SWR Y.

i Application lThis invention relates'to a machine for washing and drying receptacles, such as dishes, glasses, cups, and the like, and constitutes an improvement over the application for Patent No. 57,,660 iiledon December 3, 1931, by

Reeves Taylor and Charles A. Hull, and the present invention relates more particularly to a single compartment machine, wherein the receptacles are washed and dried in the same compartment.

In this invention I still adhere to the idea of washing and drying a single receptacle at a time,

and this .must not be/confused with the usual.

method of placing a quantitiy of Vreceptacles in abasket and subjecting them to the action of l a cleansing uid while being agitated in a, washing chamber. A 1 o One oi' the objects of the invention is to provide means whereby one individual receptacle, such a plate, dish, glass, cup or other receptacle may 2n be placed in the machine and completely washedand dried in a few seconds; the same operation being repeated for each receptacle, thus reducing the danger of breakage, sity and inconvenience oi having to "pack. a large number of receptacles in a common basket or container, and insuring a perfectly clean and dry receptacle. 0

'Another object of means whereby the I the drying maybe ,'to'provide alonger washing gtime for very dirty receptacles than thatrequlred for slightly soiled ones, thus'obviating having to wash a receptacle twice. 35 'Anotherobiect of meansl whereby the receptacles may be rotated upontheir axis-at a high 'rate of speed while being subjected, first to the cleansing action of a washing compound, andsecond to the rotating the' invention is to provide time required for washing pound, whereby the moisture. is removed from the surfaces of the lreceptacles and they become dry. j

Another obiect is to provide an .automatic 45 means whereby each receptacle iscentered on the supporting means and retained thereon durlng the washing and drying period, but may instantly be removed uponthe stopping of the rotation of the receptacle carrier..

A further oblectof the invention is to provide means whereby the different operations of the machine are timed and controlled in their proper cyclic relations; and, turning the hand locking lever, the electrical 55 current that operates the motor the invention is to 'providev obviating the necesvaried by the operator I 40 iction through thel air without the washing comthat is. upon Vclosing the cover I to rotate the A therefrom and 'the pipe that supplies cleansing yupper central spray nozzle.

- taining the same, but

andwa'shed at a time.

-lation of the arms thereto.

November 29, 193s, serial No. '100,165

s claims. ici; 141-4 receptacle movement is admitted and of thehand lever the cleansing liquid directed against the inner and length 'of time, and by ment 'of the hand lever shut oif and thereceptacle still continues to b e rotated by the support to remove the moisture dry the same. i

After this operation has been completed, by the full reverse movement of the hand lever the motor is stopped and the brought' to rest before the cover can be raised, and this same operation is repeated for each article to be washed and dried, the entire operation only requiring a few seconds to complete. i It is to be noted that throughout this speciiication that the word receptacle refers to either plates, dishes, cups, saucers, glasses and any other articles that can be washed in the machine.

In the drawings: Figure l is a top plan view of the washing support is tin-ned on and by a further l receptacle support machine, showing the same with the cover in a closed position, and indicating in dotted lines.

` liquid to 'the Figure 2 isa vertical sectional view ofthe same, taken partly on the center line, but showing two arms of the receptacle support as being on the same verticle plane to better illustrate themethod of holding 4the receptacle thereon, and also indicating in dotted lines, a small plate 'glass I, in position and holding arms lli and IIB for centering and reonly one receptacle can be placed on the sipport Figure 3 is a horizontal with the cover and top removed therefrom to expose the support for the receptacles, the centering and retaining dotted lines the position of a plate, and the rev Figure 4-is an ed detail view, partly in section of the receptacle supporting means. and its mounting and driving means, the two arms .ff the support that are shown being taken on the same vertical plane to better illustrate their 'shape and relation to the receptacles and the holding means. l

Figure 5 is a rear view of the washer with' the casing removed t0 expose the motor, soap confainer, pump, gear box and brake, and the piping for the cleansing fluid.

Figure 6 is an enlarged 5, and a.A Aalso the position of the it must beunderstood that arms, and indicating lin detail front `view of the view oithev washerA hand operating and control lever showing its relation to the cover and main casing.

Figure 7 is a side view of the same. A

Figure 8 is an enlarged detail sectional view of the cover hinge within which is mounted the controls for the motor and cleansing fluid.

Referring to the drawings:

The washer comprises the cylindrical casing I0, of suitable material such as metal and which is formed with the bottom II integral therewith andwhich is inclined as at I2 to a drain hole I3 formed in the front of the casing I0 and which may be providedv with a suitable bag to receive the refuse or placed over the sink; said casing I0 is also provided with the feet I4 and the removable sheet metal bottom` I5.

Adjacent the rear of the casing I0 and integral therewith is a top plate I6 formed with the rounded ends as shown, and a bottom plate I1 of similar design; these two plates I6 and I1 being joined together by a sheet metal casing I8, the ends of which are secured to the casing I8 in some suitable manner to allow the same to be removed for access to the. operating parts y that are mounted within the chamber tlius provided outside of the washing compartment I0,

and which comprise the electric motor i9 that l is used to rotate the article support. and operate the soap pump; the soap container thev gear- `and having a bore 82 and a spray nozzle 29 at-4 tached to the upper end thereof.

Mounted in a rotatable manner on this upright 21 is a` member 38 which carries the receptacle support 3|; said member 30 being carried on the bearings 32 and 33 mounted in the casing 24; and having mounted thereon a bevel gear`.34 in mesh with and rotatedby a bevel gear 35 which is mounted in the side wall of the casing 24 upon a drive shaft 36 extending from the gear box 2I; said transmission gears in the box 2| being driven by the motor shaft 31 which passes through the brake 22 from the motor I9; which is here shown as mounted in a vertical manner, but which may be horizontal if desired; said casing 24 is 'also provided with an oil retaining ring 3, threaded therein.

The top cover plate I6 is formed with the hinge members 48, 4I, 42 and 43 (see Figure 8) and the cover 44 is hinged thereto and is formed with the hinge members 48 and 49, and with the down-v wardly extending anged edge 45 which is formed with a groove 48 within which is placed a sealing member 41 of rubber or other suitable `materialto effect a tight joint between the upper edge of the casing I0 and the cover 44 when the same is closed. It will be seen that the top plate I6 is on a lower plane than the cover 44 to allow for the f with the valve stem head 64.

said pins 50 and 5I are provided with the heads 52 and 53. v

The cover hinge member 4 8 is hollow and formed with a bore 54 in axial relation with the bore of the other hinge members land the two 4 tubular pins 50 and 5I, and is also provided with vend of which is attached the feed water pipe 59 from an ordinary household source of hot water; and Within this tubular plug 58 is formed a valve seat 60 having a valve 6I 'mounted on the stem 62 whichextends through a plug 63 placed in the end of the tubular pin 50 and having a head 64 and spring 8 between the head 64 and the plug 63 to retain the valve in a normally closed position. It will be noted that the inner end of the valve stem 62 and head 64 are within the bore 54 of the hinge member 48, and that there is a space 1 between the plug 58 andthe plug 63 within which the soap mixes with the water before passing through the pipes 83 and |89, to the two spray nozzles.

The inner` end of the tubular hinge pin 58 ex- Y tends intothe bore 54 of the coverhinge member 48 and has the 'threads 2 formed thereon which are threaded into the hinge member 4I in such a manner that the pin 50 is stationary in the hinge members 40 and 4I, while the cover hinge members 48 and 49 turn thereon; said pin 50 is also formed with an opening in the side thereof which registers with a similar hole formed in the hingemember 49 within which is secured a water pipe 83 which passes through the cover plate 44 to the nozzle 84, to carry the mixed water and soap from the chamber 1.

The hinge pin 5I comprises a tubular pin having the head 53, the inner-end extending into thev bore 54 of the cover hinge member 48 and having the threads 63 threaded into the plate hinge member 42, so that said pin 5I is stationary in the plate hinge members 42 and 43 and movable in the cover hinge members 48 and 49; within this hinge pin 5I is mounted a plug 9 of insulating material having two electrical contacts 65'therein'to which are attached the elec- Ktrical feed wires 66 and 61, which supply current for the motor I9; the feed wire 61 being broken within the hinge member 49 and connected to the motor wires H8. Within the inner end of article support, and then operate the valve 6I to admitthe cleansing uid to the washing compartment, there is mounted on the rear end of the operating rod 56 a cam 10 which upon being rotated, first contacts withvthe button 68 and then The rod 56 is operated by a hand lever 1I that is mounted on the forward end of the rod 56 adjacent the bearing 51 on the cover 44; said hand lever being held by a pin 12 and provided with a roller 13 adapted to engage with either of the notches 14 that are formed in the sector plate 15 attached to the front of the casing I8; this sector being of such shape that'as the roller 1 3" moves along it the Y 2,092,004 cover Il will be forced tightly down upon the casing II to provide a water tight fit.

The am or upper notch 14 indicating that .the-

camIIhasoperated-thebutton Iltostartthe motor II, and the 'the hand lever 'I I to the'nrst position to rotate time that, he considers necessary to wash thebefore the cover 4I is opened.

the receptade carrier the required length of time beforehe admits the cleansing iiuid, and then he may admit the'cleansing iiuid for the length of receptacle before stopping the flow of liquid and allowing the receptacle to be rotated inthe warm air to dry the same, before the motor and The liquid soap from the container u is onveyed bythe pipe IIto the pump 23, which is' operated by the shaft |12 from v`the gearbox !I,

land the soap is delivered in a small quantity by v in an inverted manner, any refuse that they 'connotches II; the glass supporting sl; samiY supporting the pipe I Ii tothe chamber 1 where it mixes with the water entering through the valve' I I, and conveyed bythe pipes III and II to the spray nozzles; during the rtime that the valve Il is closed, the soap is by-passed back to the tank ZI' by the pipe II.

As the receptacles lare plxaced'upon the support tain will 8.119901* out through the drain hole at once. or upon the iirst rotationsofthe drop down to the bottom and be .washed I I provided for this From the Ywater pipe I I l which extends upward within the rear compartment the water and soap are conveyed by the pipe IIto thenossle II-in the center of the cover 4I, or to any other nozzles that maybe provided in the sides'of the II, or

in other parts of the cover Il; whilea water pipe III extendsdownward and inward and conveys the water to the casing -24 and upward 'through the bore I2 to placed at other locations.

The carrier or support Il for the receptacle is in the form of 'a three armed device (see Figures 2, 3 and 4) which-are secured'to the II which rotates upon the upright 21 by the screws arms being formed with the plate support Asurfaces or edges terminating at their lower end upper endewith a spur Il; the' cup supporting nd glass notches Il: all of these supporting edges and notches being sodesigned as'toaoi'aom-Y modateall'o'i'the in this classification; that is the plate. supporting sises of plates in common use: of the standard sises the cup notches will take all of cups, etc.

.washingaiid drying, I haveprovided the retaining -arms'lII andlIIwhioh are second notch indicating thatv thecam 1I has operated the valve Il to admit thev cleasing iiuid. In this way the operator may hold nonleII, or to any other nozzles.

soap and water 'the sainel against the upper and lowerl facesoi' vwith a spurV II and "at their the receptacle striking the entire surfaces and and the f reverse direction,

than the arm III, and both arms being slightly curved and set at an angle with each other so that in some cases the long arm will contact with the edge of the lreceptacle to center and hold it down, while inother cases the other arm will do the contacting, as shown by the dotted lines in the iigures'. 4 Foractuating all of the arms IIE and I II in unison the endsof the shafts III are geared together by the bevel gears 'i Il, so that all of the shafts III move togetherA by the action of the j weights III which are mounted on the studs III secured to and projectingfrom the clamps III of the arm III; thus as the support is rotated, the centrifugal force; set up will cause the weights III to lmove outward and bring the arms IIS and IIB inward into a centering'and holding relation with 'the receptacle on the support; sometimes one set o! arms doing the centering by pushing the receptacle as the arms contact therewith, and sometimes the otheiset of` arms depending upon the size and shape of the article; .the centering action taking place upon the first few rotations'of the carrier or as the weights move outward.

In the voperation of the device, 'the electrical connection havingv been made to an outlet plug, the machine placed adjacent the sink and the hot water connection made, the operator turns the hand lever to the off position and raises the cover and inserts one receptacle upon the support in an inverted position, any refuse that may be on-the receptacle thus dropping oi; the cover is then closed andthe handlelever moved toward the left, the roller engaging the curved sector which forces the -cover down tightly to insure a water tight joint between the cover and the upper edge of the casing.y

By a further movement of the hand; lever towards the left the roller engages the first notchin the sector .and the corresponding cam Von therear end of .the operating rod will close the'electrical-cireuit and start up the motor to rotate the receptacle support, the first rotations of which-tend to remove the baance of the refuse and .center the support gains momentum the weights on the arms will move outward and the arms will conwith the receptacle further centering the saine and holding it in place during the operav tion of the machine.

Then by a-ilnal movement of the hand lever to the left the `last notch and the cam-will contact with and move the valve stein and open the valve to admit the mixture of to the nozzles which will direct cleansing the same, the dirt and refuse being .carried oi! through the drain hole.

The rotation ofthe support and the receptacle vadmission of thecleansing fluid having been continued for the required length of time to 4wash the article, the hand lever is moved in -a which will first cut oiI'the still permittingthe support water supply while will remove the moisture to be rotated which from the receptacle and dry the =same,and a furthr reverse movement of the hand lever will stop the motor, and its final movement will disengage the roller cover to be raised and the cleaned and dried receptacle to be'removed and another put in its place and the'operation repeated for each receptacie. v

The movement i'. the v.hand lever to the off the receptacle in the support and as from the sector and allow theis engaged by the roller- Y position opening the electrical circuit and also operating the brake to stop the motor and thus the rotation of the support which will allow the weights to move inward and the arms outward to release the receptacle.

Having thus described my invention, what I drying, a motor attached to said casing for rotating said support, means carried by said support for centering the receptacle thereon and holding the same in a rigid manner by the rotationof said support, a cover for said casing and means contained in said cover for starting and stopping said motor and regulating the injection of the cleaning liquid, through said nozzles.

2. A washing and drying machine for food receptacles, comprising a cylindrical casing having a hinged cover and formed with an inclined bottom having a drain opening. a. cleaning liquid container attached to and forming a part of said casing, a mixing pump for the liquid, means for directing the liquid in the form of spray against the entire surface of the receptacle, a hollow upright mounted in said casing in axial relation therewith, a receptacle support rotatably L mounted on said upright and means for rotating the same thereon, means carried by said support for centering the receptacle thereon and for retaining the same during the rotation of the same, a locking hand-lever for the cover mounted thereon and adapted to be manually moved, controls for the rotating means and the liquid, and means connected to said hand-lever for operating said controls.

means for centering and retaining a single receptacle upon said edges, comprising a series of levers pivoted to said radial arms and adapted to engage the receptacle, and means actuated by the rotation of the support for actuating lsaid levers to retain them in contact with the receptacle. l

4. In a food and drink receptacle washer and dryer, a 'casing having va receptacle support comprising a rotatable support therein having radial arms formed with receptacle engaging and centering contact edges, centering and retaining levers having horizontal pivotal connection with said arms and formed with a receptacle engaging end, weights secured on the other ends of said levers, and means for rotating said receptacle support whereby the levers will engage and retain the article upon the edges of the radial arms of the support during said rotation by the outward movement of the weights due to the centrifugal force set up by said rotation.

5. In a food or drink receptacle washer and dryer, a casing having a rotatable support therein comprising a series of radial arms formed with upwardly and outwardly curved receptacle supdryer, a rotatable receptacle support comprising a series of radial arms formed with receptacle supporting and centering surfaces having limiting stops formed thereon, a series of shafts rotatably mounted in said arms, means rotatably engaging the ends of the shafts, each of said shafts extending between and rotatably connected with the arms, centering and retaining levers secured to said shafts and each formed with a receptacle engaging end, weights. mounted on the other ends of said levers, and means for imparting movement to all of said levers by the rotation of the support, to contact with and hold the receptacle upon the support.

' CHARLES A. HULL. 

